Which of the following functions of muscle is best described as helping to maintain posture and preventing unwanted movements?
Which of the following functions of muscle is best described as helping to maintain posture and preventing unwanted movements?
The best-known feature of skeletal muscle is its ability to contract and cause movement. Skeletal muscles act not only to produce movement but also to stop movement, such as resisting gravity to maintain posture.
What is the purpose of the Triad?
The main function of the triads is to translate the action potential from the plasma membrane to the sarcoplasmic reticulum, effecting calcium flow into the cytoplasm and the initiation of muscle contraction.
When the nerve impulse ends the muscle returns to its original length which is called?
– Skeletal muscles can stretch up to three times their contracted length, this is called extensibility. – Muscles can stretch, and when released, return to their original, shorter length. This property is referred to as elasticity.
What is the role of acetylcholinesterase quizlet?
What is the function of acetylcholinesterase? This enzyme breaks down acetylcholine and prevents the generation of multiple action potentials from a single nerve impulse.
Which out of the following is a voluntary muscle?
Voluntary muscles include biceps, triceps, thigh muscles, etc. Complete answer: There are three kinds of muscles in our body that conduct the body’s various activities. Skeletal muscles, cardiac muscles and smooth muscles are these three types of muscles.
What is the difference between involuntary and voluntary muscles?
Voluntary muscles can be controlled by our conscious thought, e.g. the muscles in our hands as we catch a ball. Involuntary muscles, like those that control the beating of the heart, do not require conscious thought to make them move even though their action is still controlled by the nervous system.
Where are triads located?
“Triads” are traditional organized-crime groups originating from Hong Kong, Macau and Taiwan. Criminal organizations operating in, or originating from, mainland China are “mainland Chinese criminal groups” or “black societies”.
What is triad in human anatomy?
In the histology of skeletal muscle, a triad is the structure formed by a T tubule with a sarcoplasmic reticulum (SR) known as the terminal cisterna on either side. Each skeletal muscle fiber has many thousands of triads, visible in muscle fibers that have been sectioned longitudinally.
What type of muscle performs an anchoring function by holding a bone in place?
Chap 9 Practice exam
| Question | Answer |
|---|---|
| Which muscle assists with smiling? Question 17 options: orbicularis oculi buccinator zygomaticus major depressor anguli oris | Zygomatics Major |
| What type of muscle performs an anchoring function by holding a bone in place? Question 18 options: fixator agonist synergist antagonist | Fixator |
Which type of muscle requires voluntary nervous stimulation for activation?
Which type of muscle requires voluntary nervous stimulation for activation? In order to contract, skeletal muscle fibers must be voluntarily stimulated by the nervous system. The site of muscle stimulation, where the nerve fiber communicates with the muscle fiber, is called the neuromuscular junction.
What is the action of acetylcholinesterase?
[1] The primary role of AChE is to terminate neuronal transmission and signaling between synapses to prevent ACh dispersal and activation of nearby receptors. AChE is inhibited by organophosphates and is an important component of pesticides and nerve agents.
What is active and passive immunity quizlet?
Active Immunity. immunity produced by exposure to an antigen, as a result of the immune response. Long term protection. Passive Immunity. Immunity conferred by transferring antibodies from an individual who is immune to a pathogen to another individual.
